Power-On Self Test; Parallel Loop-Back Test; Other Tests - Gestetner A265 Service Manual

POWER-ON SELF TEST

4.6 POWER-ON SELF TEST

4.6.1 PARALLEL LOOP-BACK TEST

This tests the standard IEEE1284 parallel interface using a loop-back connector.
The loop-back connector (P/#: G0219350) is required for this test.
NOTE: Do not use the loop-back connector (P/#: G0109350). This loop-back
connector causes a timeout error.
1. Turn off the machine and attach the loop-back connector to the Centronics
parallel interface.
2. Turn on the machine.
• Regardless of the test result, the controller starts up as normal.
3. Enter the SP mode and check the "Diag. Error" function for the error codes
1101 or 1102.
• Refer to section 4.3.3 for how to check the error codes.
• Refer to section 6.2 for details of the error codes.

4.6.2 OTHER TESTS

The controller tests the following devices at power-on. If an error is detected, an
error code is stored in the NVRAM. Refer to section 4.3.3 for how to check the
error codes, and section 6.2 for details of the error codes.
• Flash ROM (firmware)
• CPU, clock and ASIC
• Resident and optional SDRAM
• Centronics interface (if a loop-back connector is present)
• NVRAM
• Font ROM
• Optional HDD
A265/A267
CÓPIA NÃO CONTROLADA
4-12
CÓPIA NÃO CONTROLADA
SM